{"paper":{"title":"HST/COS Detection of Deuterated Molecular Hydrogen in a DLA at z = 0.18","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Christopher Thom, Cristina M. Oliveira, Jason Tumlinson, John O'Meara, Kenneth R. Sembach","submitted_at":"2014-01-16T23:36:01Z","abstract_excerpt":"We report on the detection of deuterated molecular hydrogen, HD, at $z = 0.18$. HD and H$_{\\rm 2}$ are detected in HST/COS data of a low metallicity ($Z \\sim 0.07Z_\\odot$) damped Ly$\\alpha$ system at $z = 0.18562$ toward QSO B0120$-$28, with log $N$(H I) = 20.50 $\\pm$ 0.10. Four absorption components are clearly resolved in H$_{\\rm 2}$ while two components are resolved in HD; the bulk of the molecular hydrogen is associated with the components traced by HD. We find total column densities log $N$(HD) = 14.82 $\\pm$ 0.15 and log $N$(H$_{\\rm 2}$) = 20.00 $\\pm$ 0.10. This system has a high molecula"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4199","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}